DI/WCB/SS Knife Gate Valve with Rubber/Metal Seal Non-rising Stem
Built with cast iron, stainless steel, or ductile iron options, this knife gate valve features a sharpened blade-style disc for cutting through viscous, particle-laden media. Equipped with rubber or PTFE seals, it delivers reliable shutoff and resists abrasion, with temperature resilience spanning -10°C to 150°C. Its streamlined structure ensures low flow resistance and easy operation, while the gate design handles slurries, sludge, and fibrous materials seamlessly. Ideal for wastewater treatment, mining, and pulp industries, it complies with API 600 standards for durable, low-maintenance performance.
5.0
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product specification
| Product Name | Gate Valve | Material | Ductile Iron/Carbon Steel / Stainless Steel |
| Type | Knife Gate valve | Medium | Water/oil/gas/steam/chemicals |
| Size | DN100-DN2400 | Seal | Rubber/Metal |
| Operation | gear/pneumatic/electric | Standard | DIN/ANSI/GOST/JIS/BS |
product description
A knife gate valve, also known as a gate knife valve, is a specialized fluid control device designed for handling viscous, abrasive, or particle-laden media. Its material composition is tailored to withstand harsh conditions: the blade-like gate is typically crafted from high-grade stainless steel or tungsten carbide for exceptional wear resistance, while the valve body may feature rubber, polyurethane, or PTFE linings to enhance sealing and prevent clogging.
Structurally, it stands out with a sharp, wedge-shaped gate that acts as a cutting element. This gate slides vertically through the valve body via a robust stem, guided by precision-machined liners that ensure smooth movement. Unlike standard gate valves, its streamlined design minimizes dead zones, reducing the risk of material buildup—critical for handling slurries or fluids with suspended solids.
Functionally, knife gate valves excel in industries like wastewater treatment, mining, and food processing. They are used to isolate or regulate flows containing sediments, sludge, or fibrous materials that would damage conventional valves. For example, in mining operations, they control the flow of mineral slurries, while in wastewater plants, they shut off sludge streams during dewatering processes.
Operation varies by model: manual versions use a handwheel for straightforward rotation—clockwise to lower the blade and seal the valve, counter-clockwise to lift and open. Pneumatic or electric actuated models offer automated control for large-scale systems. Key operational notes include avoiding dry operation (to protect the lining) and ensuring the blade is fully seated to prevent leakage when closed.
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Veyron Valve (Tianjin) Co., Ltd. We offer a diverse product range, specializing in butterfly valves, gate valves, and check valves. Our butterfly valve comes in wafer, lug, and flanged types, plus we supply chain wheels, joints, stainers, and more.
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